It's supposed to help with skin dryness and as well as eye / eyelid irritation related to it. I've read it also helps a little with the hairloss that accutane promotes (not so sure on about this).
I had some left over accutane from a cycle I did a while back and just found out it was thrwon away!! FUck am I pissed I was going to pop them with my PCT. I had like 30 40mg caps.
There's an NiH study regarding Vitamin E and accutane. Basically, vitamin E does not help diminish Accutane sides, whatsoever. Have your lip balm and moisturizer ready.